Summary:
The efficiency of drilling is very important for oil companies. One of the most important areas of application of rock mechanics in drilling is the solution of the problem of failure of the walls of the wellbore. In this work, the case is considered when, at different depths, the shape of the wellbore breakouts changes from elliptical to toroidal. Based on the results of the analysis of the geomechanical model, it was shown that the change in the shape of the breakouts is associated with a change in the inclination of the well and the redistribution of stresses.